Question # 1

The digestion of fats in the intestines is aided by

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Diffusion

Protection

Peptization

Emulsification

Which of the following is acidic?

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SO₃

N₂O

BeO

HgO

Vital force theory was rejected by

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Berzelius

Kolbe

Wholer

Lavoiser

The halide which is not hydrolysed is

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SiCI₄

SiF₄

CCI₄

PbCI₄

Number of elements presents in the fifth period of periodic table is

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8

10

18

32

Which of the following process is used to separate insoluble particles from liquids?

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Separation

Filtration

Crystallization

Condensation

In which of the following elements +1 oxidation state is more stable than +3

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B

AI

Ga

Ti

Heating a mixture of sodium benzoate and soda lime gives

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Methane

Benzene

Sodium benzene

Calcium benzoate

Setting of plaster of paris involves

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Oxidation with atmospheric oxygen

Combination with atmosphere CO₂

Dehydration

Hydration to yield another hydrate.

Heating a micture of sodium benzoate and soda lime gives

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Benzene

Methane

Sodium benzoate

Calcium benzoate

Among alkali metal salts,the lithium salts are the poorest conductors of electricity in aqueous solution because of

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Easy diffusion of Li⁺ ions

Lower ability of Li⁺ ions to polarize water molecules

Lowest charge to radius ratio

Higher degree of hydration of Li⁺ ions.

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